64506677 has 2 divisors, whose sum is σ = 64506678. Its totient is φ = 64506676.

The previous prime is 64506623. The next prime is 64506679. The reversal of 64506677 is 77660546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50112241 + 14394436 = 7079^2 + 3794^2 .

It is a cyclic number.

It is not a de Polignac number, because 64506677 - 2⁶ = 64506613 is a prime.

It is a super-2 number, since 2×64506677² = 8322222755164658, which contains 22 as substring.

Together with 64506679, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64506679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32253338 + 32253339.

It is an arithmetic number, because the mean of its divisors is an integer number (32253339).

Almost surely, 2^64506677 is an apocalyptic number.

It is an amenable number.

64506677 is a deficient number, since it is larger than the sum of its proper divisors (1).

64506677 is an equidigital number, since it uses as much as digits as its factorization.

64506677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 64506677 is about 8031.6048832098. The cubic root of 64506677 is about 401.0528036634.

The spelling of 64506677 in words is "sixty-four million, five hundred six thousand, six hundred seventy-seven".